source: vendor/current/source3/utils/ntlm_auth.c@ 587

Last change on this file since 587 was 427, checked in by Silvan Scherrer, 16 years ago

Samba 3.5.x: update to 3.5.2
File size: 72.0 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 Winbind status program.
5
6 Copyright (C) Tim Potter 2000-2003
7 Copyright (C) Andrew Bartlett <[email protected]> 2003-2004
8 Copyright (C) Francesco Chemolli <[email protected]> 2000
9 Copyright (C) Robert O'Callahan 2006 (added cached credential code).
10 Copyright (C) Kai Blin <[email protected]> 2008
11
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
16
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
24*/
25
26#include "includes.h"
27#include "utils/ntlm_auth.h"
28#include "../libcli/auth/libcli_auth.h"
29#include "../libcli/auth/spnego.h"
30#include "smb_krb5.h"
31#include <iniparser.h>
32
33#ifndef PAM_WINBIND_CONFIG_FILE
34#define PAM_WINBIND_CONFIG_FILE "/etc/security/pam_winbind.conf"
35#endif
36
37#define WINBIND_KRB5_AUTH 0x00000080
38
39#undef DBGC_CLASS
40#define DBGC_CLASS DBGC_WINBIND
41
42#define INITIAL_BUFFER_SIZE 300
43#define MAX_BUFFER_SIZE 630000
44
45enum stdio_helper_mode {
46 SQUID_2_4_BASIC,
47 SQUID_2_5_BASIC,
48 SQUID_2_5_NTLMSSP,
49 NTLMSSP_CLIENT_1,
50 GSS_SPNEGO,
51 GSS_SPNEGO_CLIENT,
52 NTLM_SERVER_1,
53 NTLM_CHANGE_PASSWORD_1,
54 NUM_HELPER_MODES
55};
56
57enum ntlm_auth_cli_state {
58 CLIENT_INITIAL = 0,
59 CLIENT_RESPONSE,
60 CLIENT_FINISHED,
61 CLIENT_ERROR
62};
63
64enum ntlm_auth_svr_state {
65 SERVER_INITIAL = 0,
66 SERVER_CHALLENGE,
67 SERVER_FINISHED,
68 SERVER_ERROR
69};
70
71struct ntlm_auth_state {
72 TALLOC_CTX *mem_ctx;
73 enum stdio_helper_mode helper_mode;
74 enum ntlm_auth_cli_state cli_state;
75 enum ntlm_auth_svr_state svr_state;
76 struct ntlmssp_state *ntlmssp_state;
77 uint32_t neg_flags;
78 char *want_feature_list;
79 bool have_session_key;
80 DATA_BLOB session_key;
81 DATA_BLOB initial_message;
82};
83
84typedef void (*stdio_helper_function)(struct ntlm_auth_state *state, char *buf,
85 int length);
86
87static void manage_squid_basic_request (struct ntlm_auth_state *state,
88 char *buf, int length);
89
90static void manage_squid_ntlmssp_request (struct ntlm_auth_state *state,
91 char *buf, int length);
92
93static void manage_client_ntlmssp_request (struct ntlm_auth_state *state,
94 char *buf, int length);
95
96static void manage_gss_spnego_request (struct ntlm_auth_state *state,
97 char *buf, int length);
98
99static void manage_gss_spnego_client_request (struct ntlm_auth_state *state,
100 char *buf, int length);
101
102static void manage_ntlm_server_1_request (struct ntlm_auth_state *state,
103 char *buf, int length);
104
105static void manage_ntlm_change_password_1_request(struct ntlm_auth_state *state,
106 char *buf, int length);
107
108static const struct {
109 enum stdio_helper_mode mode;
110 const char *name;
111 stdio_helper_function fn;
112} stdio_helper_protocols[] = {
113 { SQUID_2_4_BASIC, "squid-2.4-basic", manage_squid_basic_request},
114 { SQUID_2_5_BASIC, "squid-2.5-basic", manage_squid_basic_request},
115 { SQUID_2_5_NTLMSSP, "squid-2.5-ntlmssp", manage_squid_ntlmssp_request},
116 { NTLMSSP_CLIENT_1, "ntlmssp-client-1", manage_client_ntlmssp_request},
117 { GSS_SPNEGO, "gss-spnego", manage_gss_spnego_request},
118 { GSS_SPNEGO_CLIENT, "gss-spnego-client", manage_gss_spnego_client_request},
119 { NTLM_SERVER_1, "ntlm-server-1", manage_ntlm_server_1_request},
120 { NTLM_CHANGE_PASSWORD_1, "ntlm-change-password-1", manage_ntlm_change_password_1_request},
121 { NUM_HELPER_MODES, NULL, NULL}
122};
123
124const char *opt_username;
125const char *opt_domain;
126const char *opt_workstation;
127const char *opt_password;
128static DATA_BLOB opt_challenge;
129static DATA_BLOB opt_lm_response;
130static DATA_BLOB opt_nt_response;
131static int request_lm_key;
132static int request_user_session_key;
133static int use_cached_creds;
134
135static const char *require_membership_of;
136static const char *require_membership_of_sid;
137static const char *opt_pam_winbind_conf;
138
139static char winbind_separator(void)
140{
141 struct winbindd_response response;
142 static bool got_sep;
143 static char sep;
144
145 if (got_sep)
146 return sep;
147
148 ZERO_STRUCT(response);
149
150 /* Send off request */
151
152 if (winbindd_request_response(WINBINDD_INFO, NULL, &response) !=
153 NSS_STATUS_SUCCESS) {
154 d_printf("could not obtain winbind separator!\n");
155 return *lp_winbind_separator();
156 }
157
158 sep = response.data.info.winbind_separator;
159 got_sep = True;
160
161 if (!sep) {
162 d_printf("winbind separator was NULL!\n");
163 return *lp_winbind_separator();
164 }
165
166 return sep;
167}
168
169const char *get_winbind_domain(void)
170{
171 struct winbindd_response response;
172
173 static fstring winbind_domain;
174 if (*winbind_domain) {
175 return winbind_domain;
176 }
177
178 ZERO_STRUCT(response);
179
180 /* Send off request */
181
182 if (winbindd_request_response(WINBINDD_DOMAIN_NAME, NULL, &response) !=
183 NSS_STATUS_SUCCESS) {
184 DEBUG(0, ("could not obtain winbind domain name!\n"));
185 return lp_workgroup();
186 }
187
188 fstrcpy(winbind_domain, response.data.domain_name);
189
190 return winbind_domain;
191
192}
193
194const char *get_winbind_netbios_name(void)
195{
196 struct winbindd_response response;
197
198 static fstring winbind_netbios_name;
199
200 if (*winbind_netbios_name) {
201 return winbind_netbios_name;
202 }
203
204 ZERO_STRUCT(response);
205
206 /* Send off request */
207
208 if (winbindd_request_response(WINBINDD_NETBIOS_NAME, NULL, &response) !=
209 NSS_STATUS_SUCCESS) {
210 DEBUG(0, ("could not obtain winbind netbios name!\n"));
211 return global_myname();
212 }
213
214 fstrcpy(winbind_netbios_name, response.data.netbios_name);
215
216 return winbind_netbios_name;
217
218}
219
220DATA_BLOB get_challenge(void)
221{
222 static DATA_BLOB chal;
223 if (opt_challenge.length)
224 return opt_challenge;
225
226 chal = data_blob(NULL, 8);
227
228 generate_random_buffer(chal.data, chal.length);
229 return chal;
230}
231
232/* Copy of parse_domain_user from winbindd_util.c. Parse a string of the
233 form DOMAIN/user into a domain and a user */
234
235static bool parse_ntlm_auth_domain_user(const char *domuser, fstring domain,
236 fstring user)
237{
238
239 char *p = strchr(domuser,winbind_separator());
240
241 if (!p) {
242 return False;
243 }
244
245 fstrcpy(user, p+1);
246 fstrcpy(domain, domuser);
247 domain[PTR_DIFF(p, domuser)] = 0;
248 strupper_m(domain);
249
250 return True;
251}
252
253static bool get_require_membership_sid(void) {
254 struct winbindd_request request;
255 struct winbindd_response response;
256
257 if (!require_membership_of) {
258 return True;
259 }
260
261 if (require_membership_of_sid) {
262 return True;
263 }
264
265 /* Otherwise, ask winbindd for the name->sid request */
266
267 ZERO_STRUCT(request);
268 ZERO_STRUCT(response);
269
270 if (!parse_ntlm_auth_domain_user(require_membership_of,
271 request.data.name.dom_name,
272 request.data.name.name)) {
273 DEBUG(0, ("Could not parse %s into seperate domain/name parts!\n",
274 require_membership_of));
275 return False;
276 }
277
278 if (winbindd_request_response(WINBINDD_LOOKUPNAME, &request, &response) !=
279 NSS_STATUS_SUCCESS) {
280 DEBUG(0, ("Winbindd lookupname failed to resolve %s into a SID!\n",
281 require_membership_of));
282 return False;
283 }
284
285 require_membership_of_sid = SMB_STRDUP(response.data.sid.sid);
286
287 if (require_membership_of_sid)
288 return True;
289
290 return False;
291}
292
293/*
294 * Get some configuration from pam_winbind.conf to see if we
295 * need to contact trusted domain
296 */
297
298int get_pam_winbind_config()
299{
300 int ctrl = 0;
301 dictionary *d = NULL;
302
303 if (!opt_pam_winbind_conf || !*opt_pam_winbind_conf) {
304 opt_pam_winbind_conf = PAM_WINBIND_CONFIG_FILE;
305 }
306
307 d = iniparser_load(CONST_DISCARD(char *, opt_pam_winbind_conf));
308
309 if (!d) {
310 return 0;
311 }
312
313 if (iniparser_getboolean(d, CONST_DISCARD(char *, "global:krb5_auth"), false)) {
314 ctrl |= WINBIND_KRB5_AUTH;
315 }
316
317 iniparser_freedict(d);
318
319 return ctrl;
320}
321
322/* Authenticate a user with a plaintext password */
323
324static bool check_plaintext_auth(const char *user, const char *pass,
325 bool stdout_diagnostics)
326{
327 struct winbindd_request request;
328 struct winbindd_response response;
329 NSS_STATUS result;
330
331 if (!get_require_membership_sid()) {
332 return False;
333 }
334
335 /* Send off request */
336
337 ZERO_STRUCT(request);
338 ZERO_STRUCT(response);
339
340 fstrcpy(request.data.auth.user, user);
341 fstrcpy(request.data.auth.pass, pass);
342 if (require_membership_of_sid) {
343 strlcpy(request.data.auth.require_membership_of_sid,
344 require_membership_of_sid,
345 sizeof(request.data.auth.require_membership_of_sid));
346 }
347
348 result = winbindd_request_response(WINBINDD_PAM_AUTH, &request, &response);
349
350 /* Display response */
351
352 if (stdout_diagnostics) {
353 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
354 d_printf("Reading winbind reply failed! (0x01)\n");
355 }
356
357 d_printf("%s: %s (0x%x)\n",
358 response.data.auth.nt_status_string,
359 response.data.auth.error_string,
360 response.data.auth.nt_status);
361 } else {
362 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
363 DEBUG(1, ("Reading winbind reply failed! (0x01)\n"));
364 }
365
366 DEBUG(3, ("%s: %s (0x%x)\n",
367 response.data.auth.nt_status_string,
368 response.data.auth.error_string,
369 response.data.auth.nt_status));
370 }
371
372 return (result == NSS_STATUS_SUCCESS);
373}
374
375/* authenticate a user with an encrypted username/password */
376
377NTSTATUS contact_winbind_auth_crap(const char *username,
378 const char *domain,
379 const char *workstation,
380 const DATA_BLOB *challenge,
381 const DATA_BLOB *lm_response,
382 const DATA_BLOB *nt_response,
383 uint32 flags,
384 uint8 lm_key[8],
385 uint8 user_session_key[16],
386 char **error_string,
387 char **unix_name)
388{
389 NTSTATUS nt_status;
390 NSS_STATUS result;
391 struct winbindd_request request;
392 struct winbindd_response response;
393
394 if (!get_require_membership_sid()) {
395 return NT_STATUS_INVALID_PARAMETER;
396 }
397
398 ZERO_STRUCT(request);
399 ZERO_STRUCT(response);
400
401 request.flags = flags;
402
403 request.data.auth_crap.logon_parameters = MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT;
404
405 if (require_membership_of_sid)
406 fstrcpy(request.data.auth_crap.require_membership_of_sid, require_membership_of_sid);
407
408 fstrcpy(request.data.auth_crap.user, username);
409 fstrcpy(request.data.auth_crap.domain, domain);
410
411 fstrcpy(request.data.auth_crap.workstation,
412 workstation);
413
414 memcpy(request.data.auth_crap.chal, challenge->data, MIN(challenge->length, 8));
415
416 if (lm_response && lm_response->length) {
417 memcpy(request.data.auth_crap.lm_resp,
418 lm_response->data,
419 MIN(lm_response->length, sizeof(request.data.auth_crap.lm_resp)));
420 request.data.auth_crap.lm_resp_len = lm_response->length;
421 }
422
423 if (nt_response && nt_response->length) {
424 if (nt_response->length > sizeof(request.data.auth_crap.nt_resp)) {
425 request.flags = request.flags | WBFLAG_BIG_NTLMV2_BLOB;
426 request.extra_len = nt_response->length;
427 request.extra_data.data = SMB_MALLOC_ARRAY(char, request.extra_len);
428 if (request.extra_data.data == NULL) {
429 return NT_STATUS_NO_MEMORY;
430 }
431 memcpy(request.extra_data.data, nt_response->data,
432 nt_response->length);
433
434 } else {
435 memcpy(request.data.auth_crap.nt_resp,
436 nt_response->data, nt_response->length);
437 }
438 request.data.auth_crap.nt_resp_len = nt_response->length;
439 }
440
441 result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
442 SAFE_FREE(request.extra_data.data);
443
444 /* Display response */
445
446 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0)) {
447 nt_status = NT_STATUS_UNSUCCESSFUL;
448 if (error_string)
449 *error_string = smb_xstrdup("Reading winbind reply failed!");
450 winbindd_free_response(&response);
451 return nt_status;
452 }
453
454 nt_status = (NT_STATUS(response.data.auth.nt_status));
455 if (!NT_STATUS_IS_OK(nt_status)) {
456 if (error_string)
457 *error_string = smb_xstrdup(response.data.auth.error_string);
458 winbindd_free_response(&response);
459 return nt_status;
460 }
461
462 if ((flags & WBFLAG_PAM_LMKEY) && lm_key) {
463 memcpy(lm_key, response.data.auth.first_8_lm_hash,
464 sizeof(response.data.auth.first_8_lm_hash));
465 }
466 if ((flags & WBFLAG_PAM_USER_SESSION_KEY) && user_session_key) {
467 memcpy(user_session_key, response.data.auth.user_session_key,
468 sizeof(response.data.auth.user_session_key));
469 }
470
471 if (flags & WBFLAG_PAM_UNIX_NAME) {
472 *unix_name = SMB_STRDUP(response.data.auth.unix_username);
473 if (!*unix_name) {
474 winbindd_free_response(&response);
475 return NT_STATUS_NO_MEMORY;
476 }
477 }
478
479 winbindd_free_response(&response);
480 return nt_status;
481}
482
483/* contact server to change user password using auth crap */
484static NTSTATUS contact_winbind_change_pswd_auth_crap(const char *username,
485 const char *domain,
486 const DATA_BLOB new_nt_pswd,
487 const DATA_BLOB old_nt_hash_enc,
488 const DATA_BLOB new_lm_pswd,
489 const DATA_BLOB old_lm_hash_enc,
490 char **error_string)
491{
492 NTSTATUS nt_status;
493 NSS_STATUS result;
494 struct winbindd_request request;
495 struct winbindd_response response;
496
497 if (!get_require_membership_sid())
498 {
499 if(error_string)
500 *error_string = smb_xstrdup("Can't get membership sid.");
501 return NT_STATUS_INVALID_PARAMETER;
502 }
503
504 ZERO_STRUCT(request);
505 ZERO_STRUCT(response);
506
507 if(username != NULL)
508 fstrcpy(request.data.chng_pswd_auth_crap.user, username);
509 if(domain != NULL)
510 fstrcpy(request.data.chng_pswd_auth_crap.domain,domain);
511
512 if(new_nt_pswd.length)
513 {
514 memcpy(request.data.chng_pswd_auth_crap.new_nt_pswd, new_nt_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_nt_pswd));
515 request.data.chng_pswd_auth_crap.new_nt_pswd_len = new_nt_pswd.length;
516 }
517
518 if(old_nt_hash_enc.length)
519 {
520 memcpy(request.data.chng_pswd_auth_crap.old_nt_hash_enc, old_nt_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_nt_hash_enc));
521 request.data.chng_pswd_auth_crap.old_nt_hash_enc_len = old_nt_hash_enc.length;
522 }
523
524 if(new_lm_pswd.length)
525 {
526 memcpy(request.data.chng_pswd_auth_crap.new_lm_pswd, new_lm_pswd.data, sizeof(request.data.chng_pswd_auth_crap.new_lm_pswd));
527 request.data.chng_pswd_auth_crap.new_lm_pswd_len = new_lm_pswd.length;
528 }
529
530 if(old_lm_hash_enc.length)
531 {
532 memcpy(request.data.chng_pswd_auth_crap.old_lm_hash_enc, old_lm_hash_enc.data, sizeof(request.data.chng_pswd_auth_crap.old_lm_hash_enc));
533 request.data.chng_pswd_auth_crap.old_lm_hash_enc_len = old_lm_hash_enc.length;
534 }
535
536 result = winbindd_request_response(WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP, &request, &response);
537
538 /* Display response */
539
540 if ((result != NSS_STATUS_SUCCESS) && (response.data.auth.nt_status == 0))
541 {
542 nt_status = NT_STATUS_UNSUCCESSFUL;
543 if (error_string)
544 *error_string = smb_xstrdup("Reading winbind reply failed!");
545 winbindd_free_response(&response);
546 return nt_status;
547 }
548
549 nt_status = (NT_STATUS(response.data.auth.nt_status));
550 if (!NT_STATUS_IS_OK(nt_status))
551 {
552 if (error_string)
553 *error_string = smb_xstrdup(response.data.auth.error_string);
554 winbindd_free_response(&response);
555 return nt_status;
556 }
557
558 winbindd_free_response(&response);
559
560 return nt_status;
561}
562
563static NTSTATUS winbind_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
564{
565 static const char zeros[16] = { 0, };
566 NTSTATUS nt_status;
567 char *error_string = NULL;
568 uint8 lm_key[8];
569 uint8 user_sess_key[16];
570 char *unix_name = NULL;
571
572 nt_status = contact_winbind_auth_crap(ntlmssp_state->user, ntlmssp_state->domain,
573 ntlmssp_state->workstation,
574 &ntlmssp_state->chal,
575 &ntlmssp_state->lm_resp,
576 &ntlmssp_state->nt_resp,
577 WBFLAG_PAM_LMKEY | WBFLAG_PAM_USER_SESSION_KEY | WBFLAG_PAM_UNIX_NAME,
578 lm_key, user_sess_key,
579 &error_string, &unix_name);
580
581 if (NT_STATUS_IS_OK(nt_status)) {
582 if (memcmp(lm_key, zeros, 8) != 0) {
583 *lm_session_key = data_blob_talloc(ntlmssp_state, NULL, 16);
584 memcpy(lm_session_key->data, lm_key, 8);
585 memset(lm_session_key->data+8, '\0', 8);
586 }
587
588 if (memcmp(user_sess_key, zeros, 16) != 0) {
589 *user_session_key = data_blob_talloc(ntlmssp_state, user_sess_key, 16);
590 }
591 ntlmssp_state->auth_context = talloc_strdup(ntlmssp_state,
592 unix_name);
593 } else {
594 DEBUG(NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED) ? 0 : 3,
595 ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
596 ntlmssp_state->domain, ntlmssp_state->user,
597 ntlmssp_state->workstation,
598 error_string ? error_string : "unknown error (NULL)"));
599 ntlmssp_state->auth_context = NULL;
600 }
601
602 SAFE_FREE(error_string);
603 SAFE_FREE(unix_name);
604 return nt_status;
605}
606
607static NTSTATUS local_pw_check(struct ntlmssp_state *ntlmssp_state, DATA_BLOB *user_session_key, DATA_BLOB *lm_session_key)
608{
609 NTSTATUS nt_status;
610 struct samr_Password lm_pw, nt_pw;
611
612 nt_lm_owf_gen (opt_password, nt_pw.hash, lm_pw.hash);
613
614 nt_status = ntlm_password_check(ntlmssp_state,
615 true, true, 0,
616 &ntlmssp_state->chal,
617 &ntlmssp_state->lm_resp,
618 &ntlmssp_state->nt_resp,
619 ntlmssp_state->user,
620 ntlmssp_state->user,
621 ntlmssp_state->domain,
622 &lm_pw, &nt_pw, user_session_key, lm_session_key);
623
624 if (NT_STATUS_IS_OK(nt_status)) {
625 ntlmssp_state->auth_context = talloc_asprintf(ntlmssp_state,
626 "%s%c%s", ntlmssp_state->domain,
627 *lp_winbind_separator(),
628 ntlmssp_state->user);
629 } else {
630 DEBUG(3, ("Login for user [%s]\\[%s]@[%s] failed due to [%s]\n",
631 ntlmssp_state->domain, ntlmssp_state->user, ntlmssp_state->workstation,
632 nt_errstr(nt_status)));
633 ntlmssp_state->auth_context = NULL;
634 }
635 return nt_status;
636}
637
638static NTSTATUS ntlm_auth_start_ntlmssp_client(NTLMSSP_STATE **client_ntlmssp_state)
639{
640 NTSTATUS status;
641 if ( (opt_username == NULL) || (opt_domain == NULL) ) {
642 status = NT_STATUS_UNSUCCESSFUL;
643 DEBUG(1, ("Need username and domain for NTLMSSP\n"));
644 return NT_STATUS_INVALID_PARAMETER;
645 }
646
647 status = ntlmssp_client_start(client_ntlmssp_state);
648
649 if (!NT_STATUS_IS_OK(status)) {
650 DEBUG(1, ("Could not start NTLMSSP client: %s\n",
651 nt_errstr(status)));
652 ntlmssp_end(client_ntlmssp_state);
653 return status;
654 }
655
656 status = ntlmssp_set_username(*client_ntlmssp_state, opt_username);
657
658 if (!NT_STATUS_IS_OK(status)) {
659 DEBUG(1, ("Could not set username: %s\n",
660 nt_errstr(status)));
661 ntlmssp_end(client_ntlmssp_state);
662 return status;
663 }
664
665 status = ntlmssp_set_domain(*client_ntlmssp_state, opt_domain);
666
667 if (!NT_STATUS_IS_OK(status)) {
668 DEBUG(1, ("Could not set domain: %s\n",
669 nt_errstr(status)));
670 ntlmssp_end(client_ntlmssp_state);
671 return status;
672 }
673
674 if (opt_password) {
675 status = ntlmssp_set_password(*client_ntlmssp_state, opt_password);
676
677 if (!NT_STATUS_IS_OK(status)) {
678 DEBUG(1, ("Could not set password: %s\n",
679 nt_errstr(status)));
680 ntlmssp_end(client_ntlmssp_state);
681 return status;
682 }
683 }
684
685 return NT_STATUS_OK;
686}
687
688static NTSTATUS ntlm_auth_start_ntlmssp_server(NTLMSSP_STATE **ntlmssp_state)
689{
690 NTSTATUS status = ntlmssp_server_start(ntlmssp_state);
691
692 if (!NT_STATUS_IS_OK(status)) {
693 DEBUG(1, ("Could not start NTLMSSP server: %s\n",
694 nt_errstr(status)));
695 return status;
696 }
697
698 /* Have we been given a local password, or should we ask winbind? */
699 if (opt_password) {
700 (*ntlmssp_state)->check_password = local_pw_check;
701 (*ntlmssp_state)->get_domain = lp_workgroup;
702 (*ntlmssp_state)->get_global_myname = global_myname;
703 } else {
704 (*ntlmssp_state)->check_password = winbind_pw_check;
705 (*ntlmssp_state)->get_domain = get_winbind_domain;
706 (*ntlmssp_state)->get_global_myname = get_winbind_netbios_name;
707 }
708 return NT_STATUS_OK;
709}
710
711/*******************************************************************
712 Used by firefox to drive NTLM auth to IIS servers.
713*******************************************************************/
714
715static NTSTATUS do_ccache_ntlm_auth(DATA_BLOB initial_msg, DATA_BLOB challenge_msg,
716 DATA_BLOB *reply)
717{
718 struct winbindd_request wb_request;
719 struct winbindd_response wb_response;
720 int ctrl = 0;
721 NSS_STATUS result;
722
723 /* get winbindd to do the ntlmssp step on our behalf */
724 ZERO_STRUCT(wb_request);
725 ZERO_STRUCT(wb_response);
726
727 /*
728 * This is tricky here. If we set krb5_auth in pam_winbind.conf
729 * creds for users in trusted domain will be stored the winbindd
730 * child of the trusted domain. If we ask the primary domain for
731 * ntlm_ccache_auth, it will fail. So, we have to ask the trusted
732 * domain's child for ccache_ntlm_auth. that is to say, we have to
733 * set WBFALG_PAM_CONTACT_TRUSTDOM in request.flags.
734 */
735 ctrl = get_pam_winbind_config();
736
737 if (ctrl | WINBIND_KRB5_AUTH) {
738 wb_request.flags |= WBFLAG_PAM_CONTACT_TRUSTDOM;
739 }
740
741 fstr_sprintf(wb_request.data.ccache_ntlm_auth.user,
742 "%s%c%s", opt_domain, winbind_separator(), opt_username);
743 wb_request.data.ccache_ntlm_auth.uid = geteuid();
744 wb_request.data.ccache_ntlm_auth.initial_blob_len = initial_msg.length;
745 wb_request.data.ccache_ntlm_auth.challenge_blob_len = challenge_msg.length;
746 wb_request.extra_len = initial_msg.length + challenge_msg.length;
747
748 if (wb_request.extra_len > 0) {
749 wb_request.extra_data.data = SMB_MALLOC_ARRAY(char, wb_request.extra_len);
750 if (wb_request.extra_data.data == NULL) {
751 return NT_STATUS_NO_MEMORY;
752 }
753
754 memcpy(wb_request.extra_data.data, initial_msg.data, initial_msg.length);
755 memcpy(wb_request.extra_data.data + initial_msg.length,
756 challenge_msg.data, challenge_msg.length);
757 }
758
759 result = winbindd_request_response(WINBINDD_CCACHE_NTLMAUTH, &wb_request, &wb_response);
760 SAFE_FREE(wb_request.extra_data.data);
761
762 if (result != NSS_STATUS_SUCCESS) {
763 winbindd_free_response(&wb_response);
764 return NT_STATUS_UNSUCCESSFUL;
765 }
766
767 if (reply) {
768 *reply = data_blob(wb_response.extra_data.data,
769 wb_response.data.ccache_ntlm_auth.auth_blob_len);
770 if (wb_response.data.ccache_ntlm_auth.auth_blob_len > 0 &&
771 reply->data == NULL) {
772 winbindd_free_response(&wb_response);
773 return NT_STATUS_NO_MEMORY;
774 }
775 }
776
777 winbindd_free_response(&wb_response);
778 return NT_STATUS_MORE_PROCESSING_REQUIRED;
779}
780
781static void manage_squid_ntlmssp_request(struct ntlm_auth_state *state,
782 char *buf, int length)
783{
784 DATA_BLOB request, reply;
785 NTSTATUS nt_status;
786
787 if (strlen(buf) < 2) {
788 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
789 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
790 return;
791 }
792
793 if (strlen(buf) > 3) {
794 if(strncmp(buf, "SF ", 3) == 0){
795 DEBUG(10, ("Setting flags to negotioate\n"));
796 TALLOC_FREE(state->want_feature_list);
797 state->want_feature_list = talloc_strdup(state->mem_ctx,
798 buf+3);
799 x_fprintf(x_stdout, "OK\n");
800 return;
801 }
802 request = base64_decode_data_blob(buf + 3);
803 } else {
804 request = data_blob_null;
805 }
806
807 if ((strncmp(buf, "PW ", 3) == 0)) {
808 /* The calling application wants us to use a local password
809 * (rather than winbindd) */
810
811 opt_password = SMB_STRNDUP((const char *)request.data,
812 request.length);
813
814 if (opt_password == NULL) {
815 DEBUG(1, ("Out of memory\n"));
816 x_fprintf(x_stdout, "BH Out of memory\n");
817 data_blob_free(&request);
818 return;
819 }
820
821 x_fprintf(x_stdout, "OK\n");
822 data_blob_free(&request);
823 return;
824 }
825
826 if (strncmp(buf, "YR", 2) == 0) {
827 if (state->ntlmssp_state)
828 ntlmssp_end(&state->ntlmssp_state);
829 state->svr_state = SERVER_INITIAL;
830 } else if (strncmp(buf, "KK", 2) == 0) {
831 /* No special preprocessing required */
832 } else if (strncmp(buf, "GF", 2) == 0) {
833 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
834
835 if (state->svr_state == SERVER_FINISHED) {
836 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
837 }
838 else {
839 x_fprintf(x_stdout, "BH\n");
840 }
841 data_blob_free(&request);
842 return;
843 } else if (strncmp(buf, "GK", 2) == 0) {
844 DEBUG(10, ("Requested NTLMSSP session key\n"));
845 if(state->have_session_key) {
846 char *key64 = base64_encode_data_blob(state->mem_ctx,
847 state->session_key);
848 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
849 TALLOC_FREE(key64);
850 } else {
851 x_fprintf(x_stdout, "BH\n");
852 }
853
854 data_blob_free(&request);
855 return;
856 } else {
857 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
858 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
859 return;
860 }
861
862 if (!state->ntlmssp_state) {
863 nt_status = ntlm_auth_start_ntlmssp_server(
864 &state->ntlmssp_state);
865 if (!NT_STATUS_IS_OK(nt_status)) {
866 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
867 return;
868 }
869 ntlmssp_want_feature_list(state->ntlmssp_state,
870 state->want_feature_list);
871 }
872
873 DEBUG(10, ("got NTLMSSP packet:\n"));
874 dump_data(10, request.data, request.length);
875
876 nt_status = ntlmssp_update(state->ntlmssp_state, request, &reply);
877
878 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
879 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
880 reply);
881 x_fprintf(x_stdout, "TT %s\n", reply_base64);
882 TALLOC_FREE(reply_base64);
883 data_blob_free(&reply);
884 state->svr_state = SERVER_CHALLENGE;
885 DEBUG(10, ("NTLMSSP challenge\n"));
886 } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCESS_DENIED)) {
887 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
888 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
889
890 ntlmssp_end(&state->ntlmssp_state);
891 } else if (!NT_STATUS_IS_OK(nt_status)) {
892 x_fprintf(x_stdout, "NA %s\n", nt_errstr(nt_status));
893 DEBUG(10, ("NTLMSSP %s\n", nt_errstr(nt_status)));
894 } else {
895 x_fprintf(x_stdout, "AF %s\n",
896 (char *)state->ntlmssp_state->auth_context);
897 DEBUG(10, ("NTLMSSP OK!\n"));
898
899 if(state->have_session_key)
900 data_blob_free(&state->session_key);
901 state->session_key = data_blob(
902 state->ntlmssp_state->session_key.data,
903 state->ntlmssp_state->session_key.length);
904 state->neg_flags = state->ntlmssp_state->neg_flags;
905 state->have_session_key = true;
906 state->svr_state = SERVER_FINISHED;
907 }
908
909 data_blob_free(&request);
910}
911
912static void manage_client_ntlmssp_request(struct ntlm_auth_state *state,
913 char *buf, int length)
914{
915 DATA_BLOB request, reply;
916 NTSTATUS nt_status;
917
918 if (!opt_username || !*opt_username) {
919 x_fprintf(x_stderr, "username must be specified!\n\n");
920 exit(1);
921 }
922
923 if (strlen(buf) < 2) {
924 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
925 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
926 return;
927 }
928
929 if (strlen(buf) > 3) {
930 if(strncmp(buf, "SF ", 3) == 0) {
931 DEBUG(10, ("Looking for flags to negotiate\n"));
932 talloc_free(state->want_feature_list);
933 state->want_feature_list = talloc_strdup(state->mem_ctx,
934 buf+3);
935 x_fprintf(x_stdout, "OK\n");
936 return;
937 }
938 request = base64_decode_data_blob(buf + 3);
939 } else {
940 request = data_blob_null;
941 }
942
943 if (strncmp(buf, "PW ", 3) == 0) {
944 /* We asked for a password and obviously got it :-) */
945
946 opt_password = SMB_STRNDUP((const char *)request.data,
947 request.length);
948
949 if (opt_password == NULL) {
950 DEBUG(1, ("Out of memory\n"));
951 x_fprintf(x_stdout, "BH Out of memory\n");
952 data_blob_free(&request);
953 return;
954 }
955
956 x_fprintf(x_stdout, "OK\n");
957 data_blob_free(&request);
958 return;
959 }
960
961 if (!state->ntlmssp_state && use_cached_creds) {
962 /* check whether cached credentials are usable. */
963 DATA_BLOB empty_blob = data_blob_null;
964
965 nt_status = do_ccache_ntlm_auth(empty_blob, empty_blob, NULL);
966 if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
967 /* failed to use cached creds */
968 use_cached_creds = False;
969 }
970 }
971
972 if (opt_password == NULL && !use_cached_creds) {
973 /* Request a password from the calling process. After
974 sending it, the calling process should retry asking for the
975 negotiate. */
976
977 DEBUG(10, ("Requesting password\n"));
978 x_fprintf(x_stdout, "PW\n");
979 return;
980 }
981
982 if (strncmp(buf, "YR", 2) == 0) {
983 if (state->ntlmssp_state)
984 ntlmssp_end(&state->ntlmssp_state);
985 state->cli_state = CLIENT_INITIAL;
986 } else if (strncmp(buf, "TT", 2) == 0) {
987 /* No special preprocessing required */
988 } else if (strncmp(buf, "GF", 2) == 0) {
989 DEBUG(10, ("Requested negotiated NTLMSSP flags\n"));
990
991 if(state->cli_state == CLIENT_FINISHED) {
992 x_fprintf(x_stdout, "GF 0x%08x\n", state->neg_flags);
993 }
994 else {
995 x_fprintf(x_stdout, "BH\n");
996 }
997
998 data_blob_free(&request);
999 return;
1000 } else if (strncmp(buf, "GK", 2) == 0 ) {
1001 DEBUG(10, ("Requested session key\n"));
1002
1003 if(state->cli_state == CLIENT_FINISHED) {
1004 char *key64 = base64_encode_data_blob(state->mem_ctx,
1005 state->session_key);
1006 x_fprintf(x_stdout, "GK %s\n", key64?key64:"<NULL>");
1007 TALLOC_FREE(key64);
1008 }
1009 else {
1010 x_fprintf(x_stdout, "BH\n");
1011 }
1012
1013 data_blob_free(&request);
1014 return;
1015 } else {
1016 DEBUG(1, ("NTLMSSP query [%s] invalid", buf));
1017 x_fprintf(x_stdout, "BH NTLMSSP query invalid\n");
1018 return;
1019 }
1020
1021 if (!state->ntlmssp_state) {
1022 nt_status = ntlm_auth_start_ntlmssp_client(
1023 &state->ntlmssp_state);
1024 if (!NT_STATUS_IS_OK(nt_status)) {
1025 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1026 return;
1027 }
1028 ntlmssp_want_feature_list(state->ntlmssp_state,
1029 state->want_feature_list);
1030 state->initial_message = data_blob_null;
1031 }
1032
1033 DEBUG(10, ("got NTLMSSP packet:\n"));
1034 dump_data(10, request.data, request.length);
1035
1036 if (use_cached_creds && !opt_password &&
1037 (state->cli_state == CLIENT_RESPONSE)) {
1038 nt_status = do_ccache_ntlm_auth(state->initial_message, request,
1039 &reply);
1040 } else {
1041 nt_status = ntlmssp_update(state->ntlmssp_state, request,
1042 &reply);
1043 }
1044
1045 if (NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
1046 char *reply_base64 = base64_encode_data_blob(state->mem_ctx,
1047 reply);
1048 if (state->cli_state == CLIENT_INITIAL) {
1049 x_fprintf(x_stdout, "YR %s\n", reply_base64);
1050 state->initial_message = reply;
1051 state->cli_state = CLIENT_RESPONSE;
1052 } else {
1053 x_fprintf(x_stdout, "KK %s\n", reply_base64);
1054 data_blob_free(&reply);
1055 }
1056 TALLOC_FREE(reply_base64);
1057 DEBUG(10, ("NTLMSSP challenge\n"));
1058 } else if (NT_STATUS_IS_OK(nt_status)) {
1059 char *reply_base64 = base64_encode_data_blob(talloc_tos(),
1060 reply);
1061 x_fprintf(x_stdout, "AF %s\n", reply_base64);
1062 TALLOC_FREE(reply_base64);
1063
1064 if(state->have_session_key)
1065 data_blob_free(&state->session_key);
1066
1067 state->session_key = data_blob(
1068 state->ntlmssp_state->session_key.data,
1069 state->ntlmssp_state->session_key.length);
1070 state->neg_flags = state->ntlmssp_state->neg_flags;
1071 state->have_session_key = true;
1072
1073 DEBUG(10, ("NTLMSSP OK!\n"));
1074 state->cli_state = CLIENT_FINISHED;
1075 if (state->ntlmssp_state)
1076 ntlmssp_end(&state->ntlmssp_state);
1077 } else {
1078 x_fprintf(x_stdout, "BH %s\n", nt_errstr(nt_status));
1079 DEBUG(0, ("NTLMSSP BH: %s\n", nt_errstr(nt_status)));
1080 state->cli_state = CLIENT_ERROR;
1081 if (state->ntlmssp_state)
1082 ntlmssp_end(&state->ntlmssp_state);
1083 }
1084
1085 data_blob_free(&request);
1086}
1087
1088static void manage_squid_basic_request(struct ntlm_auth_state *state,
1089 char *buf, int length)
1090{
1091 char *user, *pass;
1092 user=buf;
1093
1094 pass=(char *)memchr(buf,' ',length);
1095 if (!pass) {
1096 DEBUG(2, ("Password not found. Denying access\n"));
1097 x_fprintf(x_stdout, "ERR\n");
1098 return;
1099 }
1100 *pass='\0';
1101 pass++;
1102
1103 if (state->helper_mode == SQUID_2_5_BASIC) {
1104 rfc1738_unescape(user);
1105 rfc1738_unescape(pass);
1106 }
1107
1108 if (check_plaintext_auth(user, pass, False)) {
1109 x_fprintf(x_stdout, "OK\n");
1110 } else {
1111 x_fprintf(x_stdout, "ERR\n");
1112 }
1113}
1114
1115static void offer_gss_spnego_mechs(void) {
1116
1117 DATA_BLOB token;
1118 struct spnego_data spnego;
1119 ssize_t len;
1120 char *reply_base64;
1121 TALLOC_CTX *ctx = talloc_tos();
1122 char *principal;
1123 char *myname_lower;
1124
1125 ZERO_STRUCT(spnego);
1126
1127 myname_lower = talloc_strdup(ctx, global_myname());
1128 if (!myname_lower) {
1129 return;
1130 }
1131 strlower_m(myname_lower);
1132
1133 principal = talloc_asprintf(ctx, "%s$@%s", myname_lower, lp_realm());
1134 if (!principal) {
1135 return;
1136 }
1137
1138 /* Server negTokenInit (mech offerings) */
1139 spnego.type = SPNEGO_NEG_TOKEN_INIT;
1140 spnego.negTokenInit.mechTypes = talloc_array(ctx, const char *, 2);
1141#ifdef HAVE_KRB5
1142 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1143 spnego.negTokenInit.mechTypes[1] = talloc_strdup(ctx, OID_NTLMSSP);
1144 spnego.negTokenInit.mechTypes[2] = NULL;
1145#else
1146 spnego.negTokenInit.mechTypes[0] = talloc_strdup(ctx, OID_NTLMSSP);
1147 spnego.negTokenInit.mechTypes[1] = NULL;
1148#endif
1149
1150
1151 spnego.negTokenInit.mechListMIC = data_blob_talloc(ctx, principal,
1152 strlen(principal));
1153
1154 len = spnego_write_data(ctx, &token, &spnego);
1155 spnego_free_data(&spnego);
1156
1157 if (len == -1) {
1158 DEBUG(1, ("Could not write SPNEGO data blob\n"));
1159 x_fprintf(x_stdout, "BH Could not write SPNEGO data blob\n");
1160 return;
1161 }
1162
1163 reply_base64 = base64_encode_data_blob(talloc_tos(), token);
1164 x_fprintf(x_stdout, "TT %s *\n", reply_base64);
1165
1166 TALLOC_FREE(reply_base64);
1167 data_blob_free(&token);
1168 DEBUG(10, ("sent SPNEGO negTokenInit\n"));
1169 return;
1170}
1171
1172static void manage_gss_spnego_request(struct ntlm_auth_state *state,
1173 char *buf, int length)
1174{
1175 static NTLMSSP_STATE *ntlmssp_state = NULL;
1176 struct spnego_data request, response;
1177 DATA_BLOB token;
1178 NTSTATUS status;
1179 ssize_t len;
1180 TALLOC_CTX *ctx = talloc_tos();
1181
1182 char *user = NULL;
1183 char *domain = NULL;
1184
1185 const char *reply_code;
1186 char *reply_base64;
1187 char *reply_argument = NULL;
1188
1189 if (strlen(buf) < 2) {
1190 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1191 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1192 return;
1193 }
1194
1195 if (strncmp(buf, "YR", 2) == 0) {
1196 if (ntlmssp_state)
1197 ntlmssp_end(&ntlmssp_state);
1198 } else if (strncmp(buf, "KK", 2) == 0) {
1199 ;
1200 } else {
1201 DEBUG(1, ("SPENGO query [%s] invalid", buf));
1202 x_fprintf(x_stdout, "BH SPENGO query invalid\n");
1203 return;
1204 }
1205
1206 if ( (strlen(buf) == 2)) {
1207
1208 /* no client data, get the negTokenInit offering
1209 mechanisms */
1210
1211 offer_gss_spnego_mechs();
1212 return;
1213 }
1214
1215 /* All subsequent requests have a blob. This might be negTokenInit or negTokenTarg */
1216
1217 if (strlen(buf) <= 3) {
1218 DEBUG(1, ("GSS-SPNEGO query [%s] invalid\n", buf));
1219 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1220 return;
1221 }
1222
1223 token = base64_decode_data_blob(buf + 3);
1224 len = spnego_read_data(ctx, token, &request);
1225 data_blob_free(&token);
1226
1227 if (len == -1) {
1228 DEBUG(1, ("GSS-SPNEGO query [%s] invalid", buf));
1229 x_fprintf(x_stdout, "BH GSS-SPNEGO query invalid\n");
1230 return;
1231 }
1232
1233 if (request.type == SPNEGO_NEG_TOKEN_INIT) {
1234
1235 /* Second request from Client. This is where the
1236 client offers its mechanism to use. */
1237
1238 if ( (request.negTokenInit.mechTypes == NULL) ||
1239 (request.negTokenInit.mechTypes[0] == NULL) ) {
1240 DEBUG(1, ("Client did not offer any mechanism"));
1241 x_fprintf(x_stdout, "BH Client did not offer any "
1242 "mechanism\n");
1243 return;
1244 }
1245
1246 status = NT_STATUS_UNSUCCESSFUL;
1247 if (strcmp(request.negTokenInit.mechTypes[0], OID_NTLMSSP) == 0) {
1248
1249 if ( request.negTokenInit.mechToken.data == NULL ) {
1250 DEBUG(1, ("Client did not provide NTLMSSP data\n"));
1251 x_fprintf(x_stdout, "BH Client did not provide "
1252 "NTLMSSP data\n");
1253 return;
1254 }
1255
1256 if ( ntlmssp_state != NULL ) {
1257 DEBUG(1, ("Client wants a new NTLMSSP challenge, but "
1258 "already got one\n"));
1259 x_fprintf(x_stdout, "BH Client wants a new "
1260 "NTLMSSP challenge, but "
1261 "already got one\n");
1262 ntlmssp_end(&ntlmssp_state);
1263 return;
1264 }
1265
1266 if (!NT_STATUS_IS_OK(status = ntlm_auth_start_ntlmssp_server(&ntlmssp_state))) {
1267 x_fprintf(x_stdout, "BH %s\n", nt_errstr(status));
1268 return;
1269 }
1270
1271 DEBUG(10, ("got NTLMSSP packet:\n"));
1272 dump_data(10, request.negTokenInit.mechToken.data,
1273 request.negTokenInit.mechToken.length);
1274
1275 response.type = SPNEGO_NEG_TOKEN_TARG;
1276 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_NTLMSSP);
1277 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1278
1279 status = ntlmssp_update(ntlmssp_state,
1280 request.negTokenInit.mechToken,
1281 &response.negTokenTarg.responseToken);
1282 }
1283
1284#ifdef HAVE_KRB5
1285 if (strcmp(request.negTokenInit.mechTypes[0], OID_KERBEROS5_OLD) == 0) {
1286
1287 TALLOC_CTX *mem_ctx = talloc_init("manage_gss_spnego_request");
1288 char *principal;
1289 DATA_BLOB ap_rep;
1290 DATA_BLOB session_key;
1291 struct PAC_DATA *pac_data = NULL;
1292
1293 if ( request.negTokenInit.mechToken.data == NULL ) {
1294 DEBUG(1, ("Client did not provide Kerberos data\n"));
1295 x_fprintf(x_stdout, "BH Client did not provide "
1296 "Kerberos data\n");
1297 return;
1298 }
1299
1300 response.type = SPNEGO_NEG_TOKEN_TARG;
1301 response.negTokenTarg.supportedMech = talloc_strdup(ctx, OID_KERBEROS5_OLD);
1302 response.negTokenTarg.mechListMIC = data_blob_talloc(ctx, NULL, 0);
1303 response.negTokenTarg.responseToken = data_blob_talloc(ctx, NULL, 0);
1304